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Let's release it - an intro to Continuous Delivery

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a n i n t r o t o c o n t i n u o u s d e l i v e r y 
LET’S RELEASE IT 
Rouan Wilsenach 
@rouanw 
thoughtworks.com

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THE LAST MILE 
Does this look familiar? 
2

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Analysis & Design 
Development 
Test & Showcase 
Release 
& Operations 
‘Agile’ team 
Centralised QA IT Operations 
Integr...

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Let's release it - an intro to Continuous Delivery

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Imagine being able to ship new features with confidence. Imagine decoupling the process of putting new code in production from the decision to release new features to users. Push to production every day and release features when you’re ready. Continuous Delivery describes a set of practices that can make this happen. Rouan gives you an introduction to the concept of Continuous Delivery and some of the main practices that underpin it. He talks about automated testing, deployment and version control. He explains what it means for your approach to user stories and your definition of done and about the difference it will make in the life of your product owner. He’ll cover the concept of building quality into the delivery process and the power this gives you.

Imagine being able to ship new features with confidence. Imagine decoupling the process of putting new code in production from the decision to release new features to users. Push to production every day and release features when you’re ready. Continuous Delivery describes a set of practices that can make this happen. Rouan gives you an introduction to the concept of Continuous Delivery and some of the main practices that underpin it. He talks about automated testing, deployment and version control. He explains what it means for your approach to user stories and your definition of done and about the difference it will make in the life of your product owner. He’ll cover the concept of building quality into the delivery process and the power this gives you.

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Let's release it - an intro to Continuous Delivery

  1. 1. a n i n t r o t o c o n t i n u o u s d e l i v e r y LET’S RELEASE IT Rouan Wilsenach @rouanw thoughtworks.com
  2. 2. THE LAST MILE Does this look familiar? 2
  3. 3. Analysis & Design Development Test & Showcase Release & Operations ‘Agile’ team Centralised QA IT Operations Integration & QA Customer The ‘last mile’ Iteration 0 - 1 - 2 - 3 - n 3
  4. 4. 4 Test & Showcase Customer Delivery team Constant flow of new features into production
  5. 5. PRINCIPLES OF CD 5
  6. 6. 6 Decouple release from deployment
  7. 7. 7 Done means released
  8. 8. 8 Small releases
  9. 9. 9 Build quality in
  10. 10. 10 If it hurts, do it more often
  11. 11. 11 Automate everything
  12. 12. BENEFITS OF CD 12
  13. 13. 13 Clarity
  14. 14. 14 Confidence
  15. 15. 15 Less stress
  16. 16. SHOW ME HOW Blah blah blah. How do we actually do this? 16
  17. 17. AUTOMATE EVERYTHING The machinery to put code in production. All the time. 17
  18. 18. 18 Automated testing
  19. 19. 19 Production-like environments
  20. 20. 20 Automated deployments
  21. 21. 21 Automated infrastructure
  22. 22. BUILD PIPELINE The production gauntlet 22
  23. 23. 23
  24. 24. 24 Trigger the pipe on every change
  25. 25. 25 Fast feedback
  26. 26. 26 Build artefact
  27. 27. 27 The go button
  28. 28. TRUNK BASED DEVELOPMENT How to code when everything is in production 28
  29. 29. Put everyone’s changes together all the time 29
  30. 30. 30 Small changes
  31. 31. 31 User stories
  32. 32. 32 Keep out of reach of users
  33. 33. 33 Feature toggles
  34. 34. 34 not too many short lived talk about them Toggling tips
  35. 35. 35 Branch by abstraction
  36. 36. WHAT GOES IN The other side of the pipe 36
  37. 37. 37 Release decisions
  38. 38. 38 Use feedback
  39. 39. 39 Measure cycle time
  40. 40. RECAP Once more with feeling 40
  41. 41. 41 The last mile Principles of CD Benefits automate everything How? trunk based dev build pipeline what goes in
  42. 42. SOME RESOURCES Continuous Integration: • www.martinfowler.com/articles/continuousIntegration.html • http://martinfowler.com/bliki/FeatureBranch.html Trunk based development: • http://martinfowler.com/bliki/FeatureToggle.html • http://martinfowler.com/bliki/BranchByAbstraction.html • http://continuousdelivery.com/wp-content/uploads/2011/05/ branch_by_abstraction.png Continuous Delivery • http://www.thoughtworks.com/continuous-delivery • http://martinfowler.com/bliki/ContinuousDelivery.html • http://go.cd 42
  43. 43. SOME RESOURCES Jez Humble (@jezhumble) • continuousdelivery.com • CD Book: http://martinfowler.com/books/continuousDelivery.html • Video on adopting CD: http://www.infoq.com/presentations/Adopting-Continuous- Delivery 43
  44. 44. a n i n t r o t o c o n t i n u o u s d e l i v e r y LET’S RELEASE IT Rouan Wilsenach @rouanw thoughtworks.com

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